Thanks, L.
a simpler way is to setup the rc environment
to send out a special control sequence on cd,
and have acme-sac win update its label.
please see http://9fans.net/archive/2010/05/498.
it may be necessary to rewrite the 'pwd' output
in http://swtch.com/usr/local/plan9/bin/awd.
for example, pwd.exe from 9pm prints
<drive>:<path>, which should be rewritten
as /n/<drive>/<path>, to enable b3 on
relative file names.
i use this trick when i launch cygwin shell
from acme-sac and also when i ssh to
solaris workstations with u9fs running.
arvindh
you close the window.
no interrupt in inferno, only kill, i'm afraid.